Replication package for "Does inequality beget inequality? Experimental tests of the prediction that inequality increases system justification motivation" 
By Kris-Stella Trump and Ariel White

This file contains an overview of the replication package for the paper and its supporting information.  The replication files themselves are split into three folders, each representing a separate study (one main study is presented in the main paper, and two additional studies are described in the SI).  We describe each study's replication materials in turn.


First, the main study replication consists of the following files: 

- "Codebook 1 - Study-specific variables.docx" lists the coding for variables that were specific to our study (treatments, outcome variables). Note that the codebook has placeholders for treatment images. The images themselves are reproduced in the main body of the article. 

- "Codebook 2 - TESS Standard Data Delivery variables.pdf" lists the coding for variables included in all TESS studies (income, gender, etc)

- "TESS_analysis_code.R" is the replication code

- "TESS_analysis_code_log.txt" is the log produced by the replication code

- "TESS3 174 - Trump_Client.sav" is the original dataset received from TESS. The data come from TESS study 605 (http://www.tessexperiments.org/data/trump605.html)



The first additional study replication consists of the following files: 

- "Add. Study 1 - Qualtrics Codebook.docx" lists the coding for variables; this document is an export from Qualtrics. It does not include images of the treatments; these are rendered in the Supplemental Information document.

- "Add Study 1 - analysis code.R" is the replication code

- "Add_Study1_analysis_code_log.txt" is the log produced by the replication code

- "SJT_Gini_data.csv" is the data, collected on Amazon’s Mechanical Turk in April 2014 (more information in the SI)



The second additional study replication consists of the following files:

- "Add. Study 2 - Qualtrics Codebook.docx" lists the coding for variables; this document is an export from Qualtrics. It does not include images of the treatments; these are rendered in the Supplemental Information document.

- "Add Study 2 - analysis code.R" is the replication code

- "Add_Study2_analysis_code_log.txt" is the log produced by the replication code

- "Congress MTurk data.csv" is the Mechanical Turk data

- "Congress Online sample data.csv" is the data from online volunteer samples



